Device for packing or stuffing tubes filled with sand or the like by means of knocking or beating



J. HOFFMANN DEVICE FOR PACKING- OR STUFFING TUBES FILLED WFTH SAND OR'THE LIKE BY MEANS OF KNOCKING 0R BEATING Filed Jan. '7, 1924 4 Shaets-Sheet 1 I J. HOFFMANN DEVICE FOR PACKING OR STUFFING TUBES FILLED WITH SAND OR THE LIKE BY- MEANS OF KNOGKING 0R BEATING Filed Jan. 7, 1924 4 She'eiS-Sheet Dec, 9, 1924. v J. HOFFMANN DEVICE FOR PACKING OR STUFFING TUBES FILLED WITH SAND OR THE LIKE BY MEANS OF I QIQCKIN'G' OR BEATING Filed Jan. '7, 1924 4-Sheets-Sheet 5 I P l i Dec. v9, a I v A 15185202 J. HOFFMANN DEVICE-FOR PACKING 0B STUFFING TUBES FILLED WITH SAND OR THE LIKE BY MEANS OF KNOCKING 0R BEATING Filed Jan. '7, 1924 4 Sheets-Sheet 4 Patented Dec. 9, 1924.

UNITED STATES PATENT OFFICE.

JOHANN HOFFMANN, OF VIENNA, AUSTRIA.

DEVICE FOR PACKING on STUFFING TUBES FILLED WITH SAND on THE LIKE BY MEANS or KNOCKING. on EATING.

Application filed January 7, 1924. seriai No. 684,913.

To all whom it may concern:

Be it known that I, JOHANN HOFFMANN, manufacturer, residing at Vienna, in the Republic of Austria, have invented certain new and useful Improvements in a Device for Packing or Stuffing Tubes Filled with Sand or the like by Means of Knocking or Beat ing, of which the following is a specification. This invention relates to a device for packing or stufiing tubes filled with sand or the like by means of knocking or beating.

Devices for knocking or beating tubes filled with sand are already known, in which the tube is caused to rotate about its axis and the hammers play upon the outside of the tube and thereby carry out a longitudinal movement with respect to the tube. 5

The present invention consists in that beside the longitudinal movement the hamiiiei's carry out a simultaneous movement around the immovable tube. Further the invention has for its object to provide a knocking or beating device of such construction, that the knocking or beating force of the rotating hammers can be regulated by varying the tension of the knocking springs by means of adjustable tensioniirg knocking device in vertical section, and Fig.

4 the same in horizontal section. Figs. 5 and 6 illustrate the knocking device in frontand plan view respectively. Fig. 7 is a plan view of the non-rotating part of the knocking device. and F ig. 8 a front view of this part. whereby the left hand side is shown in section. Figs. 9 and 10 illustrate the guidediscs of the tensioning cams in plan view and section respectively. Figs. 11 and 12 show the adjusting disc of the tensioning cams in plan view and section respectively. Figs. 13, 14 and 15 illustrate a tensioning cam in side view, front view and plan view respectively. Fig. 16 shows a hammer, and Fig. 17 a tensioning lever for the movement of the hammers.

The machine frame consists of three pillars 1, 2 and 3, provided with transverse connecting members 4 at the top and bottom.

"' A: bottom bearing 5' furnished with adjust iiig screwss 6' and atop guide 7' serve for clamping or fixing the tube T to be knocked or hammered. The knocking or beating arrangement comprises a bottom member 8, which is guided on the pillars 1, 2 and 3'by means of arms 9 and rollers 10 and is adapted to carryout an upand down movement only along the tube, and a hammer-support 11 which is adapted to perform a rotating movement around the tube. The bottom member 8 is suspended from ropes 12 or the like, which pass over pulleys 13 t0 winding drums 15, arranged on a shaft 14. The

winding drums are operated by a toothed wheel 16 secured to the end of the shaft 14 and 'me'shing with a pinion 17 keyed to a shaft 18, which is provided with and rotated by a 'driving pulley 19. A driving pulley '21 is arranged on a shaft 20 and an endless belt 22 passes from the pulley 21 over a driving pulley 23 of the knocking arrangement and over a guide pulley 24 and a tension pulley 2'5 back'to the driving pulley 21. The shaft 26 of the driving pulley 23 carries a bevel wheel 27 which meshes with a rim of gear wheel 28' of the hammersupport 11 and thus is adapted to rotate the latter. I

The hammer-supportconsists of a tubular member 29 (Figs. 3 and ,4) and a disc 30. which is provided with the rim of gear wheel 28. The disc carries radially disposed hammer-casings 31, closed at the outer side by lids 32 and at the top by a coverplate 33. A hammer-sleeve 34 is movably arranged in every hammer-casing and a hammer 35 is screwed into the former, the hammer-head 36 is adapted to pass through an opening 37 in the member 29. A knocking spring 38 is disposed between the hammer 35 and the hammer-sleeve 34, one end of the said. spring resting against the lid 32 of the casing and the other end thereof against the hammer-sleeve 34, which is secured against rotation by a bolt 39 passing through a slot 40 of the disc 30. The end of the bolt 39 is gripped by the free end 41 of a tension-lever 42, which is rotatably mounted on a pin 43 fixed to the disc 30..

The lower or bottom part of the knocking arrangement is formed by'an annular mem-' her or ring 44 with a stepped bottom 45, between its arms 9 is arranged the bearing of the shaft 26. A. guide disc is'i'secured to the top step of the bottom 45 and is provided with. slots 41,. in which radially adjustable tensioningfcam's 48 are disposed. By means of a slide-block 49 every tensioning cam is disposed in its respective slot 47 in the guide disc 46 and'passes by means of a bolt 50 through a curved. slot 51 of a regulating disc 52,'which is rotatablydisposed below the guide disc 46, the rotation being effected by. means of ahandle53 in the ring 44- and limited by the slot 54. Each tensioning cam 48,is provided with a screwthreaded end 56, which is passed through a slot 55 in the bottom 45 and is secured against leaving its position toward the top by a nut 57 The tensioning cams 48 are provided with a curved guidingsurface 58. The end 41 of. the tension-lever 42zis enlarged-and fnrnished with a slot 59, which surrounds the 61..for. the insertion :of a key, in :ca'se itis desiredto move the hammerinto or out of orgout the hamme The machine operates the followingj.

manner:

The tube T, "which is filled'withvsand and is tobe knockedor beaten is vertically and centrally disposed between the bottom hearing and the top guide.- 1 On setting the machine into operation; the entire knocking arrangement carries out an alterating up and down movement ialongrthe tube, whereby the upper part got the same performs a rotary motion .around the tube. When the disc 30 is rotating the ends 41 of the tension-lever come into contact with the guidesurfaces 58 of the tensioning cams 48 and thereby are forced to move outwardly by turning about their pivots 43. In consequence thereof the guide-sleeve 34 together with its hammer is shifted outwardly thereby tensioning the knocking spring 38. As soon as the end 41 of the tension-lever leaves a tension-cam 48, the hammer together with the hammer-sleeve 34 are tossed forward by the action of the relieved knocking spring 38, the hammer-head 36 passing through the opening 37 and is brought to play on the tube '1 to be knocked or beaten. This procedure is repeated in the same manner when a tension-lever 42 passes one of the tensioning cams 48. The tension of all knocking springs 38 depends on the larger or smaller distance of the tensioning cams from the centre of the knocking arrangement. If the said cams are disposed in a greater distance from the centre of the said arrangement the knocking springs will be more tensioned and therefore the hammer will play with greater force on the tube;

tion of the tensioning cams 48, this being accomplished by rotating the regulating disc 52 .by means of its handle 53. In Fig.

4 of the drawings the tensioning springs 43 are disposed in their outermost position and efi'ect the greatest tensioning of the knocking springs. VVhenrotating the regulating disc clockwise the curved slots 51 cause the simultaneous and uniform inward movement of all' tensioning cams, whereby all knocking springs are less tensioned when the tensionlevers are passingfandthe hammers act with a smaller forcew As during the revolution of the-hamme'rsthe regulating disc solely. participates onthe movement alongithe tube, the regulation of the knock ofthe hammers 'isrendered possible without havingito stopthe machine.

claim wi' 4 1.; A'-;device for rapping tubes which have been filled-with sand, comprising a member arranged to execute a; movement longitudinally of the work only andrc arrying clamping jaws,.and a superposed member carrying hammers, and arrangedto rotate about the work, said last named member being arra-nged to participate in 'the longitudinal movement of the first named member.

2. A device for rapping tubes which have been filled with sand, comprising a member arranged to execute a movement longitudinally of the work only and carrying clamping jaws, and a superposed member carrying hammers, and arranged to rotate about the work, said last named member being arranged to participate in the longitudinal movement of the first named member, springs to impart rapping force to the hammers. and means to vary the, tension of the springs, said means including adjustable devices.

3. A device for rapping tubes which have been filled with sand, comprising rapping hammers arranged for longitudinal movement and also for revoluble movement about the work, springs arranged to impart rapping force to the hammers, means to vary the tension of the springs and including adjustable devices, and a common regulating element for said adjustable devices.

4. A device as set forth in claim 3 including tensioning levers for the hammers operable by thcisaid tensioning devices and arranged to effect movement of the hammers and tensioning of the springs in accordance with the adjustment of the said tensionmg devices.

5. A device for packing tubes filled with sand or the like, comprising in comblnation,

Inn

means for immovably securing the filled tube in position, and a beating device adaptcd to play on the outside of the tube, the said beating device consisting of two parts, one part carrying tensioning cams and being adapted to carry out a movement in the longitudinal direction of the tube and the other part therefor being disposed above the part first mentioned and supports a hammer and further is adapted to carry out a rotary movement around the tube whereby the hammer is withdrawn from the tubeby the said cams and after the latter have left the hammer, the same is forced to play on the tube, and during the longitudinal movement of the first part the rotary second part also is taken along by the latter, so as to perform also a simultaneous longitudinal movement.

'6. A device for packing tubes filled with sand orthe like, comprising in combination, means for immovably securing the filled tube'in position, anda beating device adapted to play on the outside of the tube,

the said beating device consisting of two parts, one part carrying tensioning cams and being adapted to carry out a "movement in the longitudinal direction of the tube and the other part thereof being disposed'abov'e the part first mentioned and supports a number of radially disposed hammers and further is adapted to carryout a rotary movement around the tube whereby the hammers are withdrawn from the tube by the said cams and after the latter have left the hammer's, the same are forced to play on the tube, and during the longitudinal move ment of the first part the rotary second part also is taken along by the former, so as to perform also a simultaneous longitudinal movement.

7. A device for packing tubes filled with sand or the like, comprising in con'ibination, means for in'nnovably securing the filled tube in position, and a beating device adapt ed to play on the outside of the tube, the said beating device consisting of two parts, one part. carrying tensioning cams and being adapted to carry out a movement in a longitudinal direction of the tube and the other part thereof being disposed above the part first mentioned and supports a. flexible hammer and further is adapted to carry out a rotary movement around the tube whereby the flexible hammer is withdrawn from the tube and placed in tension by the cams, and during the longitudinal movement of the first part the rotary second part also is taken along by the latter, so as to perform also a simultaneous longitudinal movement.

8. A device for packing tubes filled with sand or the like, comprising in combination, means for innnovably securing the filled tube in position, and a beating device adapted to play on the outside of the tube,

the said beating device consisting of two parts, one part. carrying tensioning cams and being adapted to carry out a movement in the longitudinal direction of the tube and the other part thereof being disposed above the part first mentioned and supports a number of radially disposed flexible hammers and further is adapted to carry out a rotary movement around the tube, whereby the flexible vhammers are withdrawn from the tube and placed in tension by the cams, and during the longitudinal movement of the first-part the second part also is taken along by the'latter,'so as to perform also a simultaneous longitudinal movement.

9. A device for packing tubes filled with sand or the like, comprising in combination, means for immovably securing the filled tube in position, and a beating device adapted to play on the outside of the tube, the said beating device consisting of two parts, one part carrying adjustable tensioning cams and being adapted to carry out a movement'in'the longitudinal direction of the tube 'aii'dthe other part thereof being disposed above the first'mentioned part and supports a fiexibleh'ammer and further is adapte'd'to carry-out a rotary movement a-round'the tube,='whe'reby the flexible hammer is withdrawn "from the tube and its beating force-may be varied by the said adjustable cams, and during the longitudinal movement ofthe'first-part the rotary second part also is taken a'l'ongby the latter, so as to perform also a simultaneous longitudinal movement.

10. A'device for packing tubes filled with sand or the like, comprising in combination, means for immovably securing the filled tube in position; and a beating device adapted to play on the tube, the said beating device consisting of two parts, one part carrying adjustable cams and being adapted to carry out a movement in the longitudinal direction'of-the tube and the other part thereof being disposed above the first mentioned part of radially disposed flexible hammers and further being adapted to carry out a rotary movement around the tube whereby the flexible hammers are withdrawn from the tube and their beating force may be varied by the said adjustable cams, and during the longitudinal movement of the first part the rotary second part also is taken along by the latter, so as to perform also a simultaneous longitudinal movement.

11. A device for packing tubes filled with sand or the like, comprising in combination, means for immovably securing the filled tube in position, and a beating device adapted to play on the outside of the tube, the said beating device consisting of two parts, one part carrying adjustable tensioning cams and being adapted to carry out a movement in the longitudinal direction of the tube force of the hammer may be varied by the movement of the adjustable cams, and during the longitudinal movement of the first part the rotary second part also is taken along by the latter, so as to perform also a simultaneous longitudinal movement. a 1

12. A device for packing tubes filled with sand or the like compris'ing in combination,

means for immovably securing the filled tube in position, and a heating device adapted to play on the tube, the said beatingdevice consisting of two p'arts,-one:part carrying adjustable cams and-'beingadapted to carry out a movement in! the longitudinal direction of the tube and the other partthereot being disposedIabove :the first mentioned part and supports .a number of radially dis! posed hammers, each :hammer being furmshed with a springainorder to drive its hammer with force against the outside of thetube, the said second part being adapted to carry-out arota'rymovement around the tube," whereby, the vhammers are withdrawn from the said tube by the said cams and their springs are compressed and the tension of the latter and thus the beating force of the hammers may be varied by the said ad justable cams, and during the longitudinal movement of the first part the rotary second part also is taken along by the latter,

so as to perform also a simultaneous longitudinal movement. a

13. A device for packing tubes filled with sand or the like, comprising in combination, means for immovably securing the filled tube in position, and a heating device adapted to play on the outside of the tube, the said beating device consisting of two parts, one part carrying tensioning cams and being adapted to carry out a movement in the longitudinal direction of the tube, the said cams partly extending into the slots of a slotted adjustable member arranged on this part of the beating device and by the adjustment of the said member all cams are simultaneously and to the same extent adjusted, and the other part of the said beating device is disposed above the part first mentioned and supports a flexible hammer and further 1s adapted to carry out a rotary movement around the tube, whereby the flexible hammer is withdrawn from the tube and its beating force may be varied by the said adjustable cams, and during the longitudinal first part the rotary second part also is taken along by the latter, so as to perform also a simultaneous longitudinal movement. V

let. A device for packing tubes filled with sand or the like, comprising in combination, means for immovably securing the filled tube in position, and a heating device adapted to play on the tube, the said heating device consisting of two parts, one part carrying tensioniug cams and being adapted to carry out a movement in the longitudinal direction of the tube, the said cams partly extending into the slots of a slotted adjustable member arranged in this part of the heating device and by the adjustment of the said member all cams are simultaneously and to the same extent adjusted, and the other part of the heating device is disposed above the first mentioned part and supports a member of radially disposed flexible hammers and further'is adapted to carry out a rotary movement around the tube, whereby the flexible hammers are withdrawn from the tube and their beating force may be varied by the said adjustable cams, and during the longitudinal movement of the first part the rotary second part also is taken along by the latter, so as to perform a simultaneous longitudinal movement.

15. A device for packing tubes filled with sand or the like, comprising in combination, means for immovably securing the filled tube in position,tand a beating device adapted to play on the outside of the tube, the said beating device consisting of two parts, one part carrying tensioning cams and being adapted to carry out a movement in the longitudinal direction of the tube the said cams partly extendinginto the slots of a slotted adjustable member arranged in this part of the heating device and by the adj ustment of the said member cams are simultaneously and to the same extent adjusted, and the other part of the said heating device is disposed above the part first mentioned and supports a hammer furnished with a spring in order to drive the hammer with force against the outside of the tube, the said second part being adapted to carry out a rotary movement around the tube, whereby the hammer is withdrawn from the said tube by the said cams and its spring is compressed and the tension of the latter and thus the beating force of the hammer may be varied by the said adjustable cams, and during the longitudinal movement of the first part the rotary second part also is taken along by the latter, so as to perform also a simultaneous longitudinal movement.

16. A device for packing tubes filled with sand or the like, comprising in combination. means for immovably securing the filled tube in position, and a heating device adapted to play on the tube, the said heating device consisting of two parts, one part carrying tensioning cams and being adapted to carry out a movement in the-longitudinal direction of the tube, the said camspartly extending into the slots of a 'slotted adjustable member arranged in this part of the beating device and by the adjustment of the-said member all cams are simultaneously and to the same extent adjusted, and the other partof the beating device is disposed above the part first mentioned and supports a number of radially disposed hammers, each hammer being furnished with a spring in order to drive its hammer with force against the outside of the tube,-the said second part being adapted to carry outa rotary movement around the tube, whereby the hammers are Withdrawn from the said tube by the said cams and their springs are compressed and the tension of the latter and thus the beating force of the hammers may be varied by the said adjustable cams, and during the longitudinal movement of the first part the rotary second part also 'is taken along by the latter,=so as to-perfor'm also a simultaneous longitudinal movement;

17. A device for packing tubes filledwith sand or the like, comprising in combination, means for immovably securing the --filled tube in position, and a beating device adapted to play on the outsideof-thetube, the said beating device consisting oftwo parts, one part carrying tensioning cams andbeing adapted to carry out a movement in the longitudinal direction of the tube, the said cams partly extending into curved slots of a slotted adjustable annular disc arranged in this part oi the beating device and by the adjustment of the said disc all cams are simultaneously and to the same extent adjusted, and the other part of the said beating device is disposed above the part first mentioned and supports a flexible hammer and further is adapted to carry out a rotary movement around the tube, whereby the flexible hammer is withdrawn from the tube and its beating force may be varied by the said adjustable cams, and during the longitudinal movement of the first part the rotary second part also is taken along by the latter so as to perform also a simultaneous longitudinal movement.

18. A device for packing tubes filled with sand or the like, comprising in combination, means for innnovably securing the filled tube in position, and a beating device adapted to play on the tube, the said beating device consisting of two parts, one part carrying tensioning cams and being adapted to carry out a movement in the longitudinal direction of the tube, the said cams partly extending into curved slots of a slotted adjustable annular disc arranged in this part of the beating device and by the adjustment of the said disc all cams are simultaneously and to the same extent adjusted, and the other part of the beating device is disposed above the part first mentioned and supports a number of radially'disposed flexible hammers and further is adapted to carryout a rotary-movement around the :tube, whereby the flexible hammers are withdrawn from the tube and"-their beating force may he varied by thesaid adjustable cams, and during the longitudinal movement of the first part the-rotary second part also is taken along by the latter, so asj'to perform a simultaneous longitudinal movement. 19. A device for packing tubes filled with sand or the like, comprising in combination, means forinimovab1y' securing the filled tube in ositionya'nd a 'beatingdevice adapted to p'l yTo'n the tube, the'said beating device-consisting of two parts, one part carrying tensioning cams and being adapted to carry but a movement in the longitudinal direction of the'tube,-the said cams partly extending into *curved slots of a slotted ad- -jiista'ble annular disc arranged in thispart 'of'the beatin device-and by the. adjustment of the i s'aidfi allifca-liis are siiiiul'taiieously and "to the *sai'ne'i adj1 1sted," and the other part of the i said heating device is disposed-above the partyin -t mentioned and supports" aahaammew furnished with a spring in "order w drive '1 the hammer with 'fforce against the outside er the-tube, the'said second part beiiigadaptedto carry out a rotary 1novementaround"the tube, whereby the hammer'fis withdrawn fr'omthe said tube by the saidcams 'and its spring is compressed and the tension of the latter and thus the beating force ofthe hammer may be variedbiy the said adjustablecams, and during the" longitudinal movement of the first part the rotary second part also is taken along by'the latter, so as to perform also a simultaneous longitudinal movement. 20. A device for packing tubes filled with sand or the like, comprising in combination, meansfor immovably securing the filled tube in position, and a beating device adapted to play on the outside of the tube, the said beating device consisting of two parts, one part carrying tensioning cams and being adapted to carry out a movement in the longitudinal direction of the tube, the said cams partly extending into curved slots of a slotted adjustable annular disc arranged in this part of the beating device and by the adjustment of the said disc all cams are simultaneously and to the same extent adjusted, and the other part of the said beating device is disposed above the part first mentioned and supports a number of radially disposed hammers,'each hammer being furnished with a spring in order todrive its hammer with force against the outside of the tube, the said second part being adapted to carry out a rotary movement around the tube, whereby the hammers are withdrawn from the .said tube by the :said cams and their springs arecompressed and the tension of thelatter and thus the beating force-of the hammers may be varied by the said adjustable, cams, and during the longitudinal movement of the first part the rotary second part also is taken along by the latter, so as ,perform also a simultaneous longitudinal movement. v 21. A devicev fo r packing tubes filled with sand or the like, comprising in combination, means for immovably securing the filled tube in position, a beating device adapted to play on the outside of the tube, the said heating device consisting-of two parts, one part carrying adjustable tensioning cams and being adapted to carry out amovement in the longitudinal direction of the tube, and the othenpart thereof being disposed above the partifirst'imentioned and supports ,a flexible hammer and further is adapted to carry .out a rotary movementaround the tube; and a lever piyotallysecured, to the said rotary second, jrt, the tree, 1 end of the; said lever beinglattached to the said hammer and during theQrotation-the flexible hammer is withdrawnffrom. the tube by thecontact of the free end of the lever with the cams and the beatingforce of the hammermay be varied by means of ,adjusting the saidcams, and duringnth e longitudinal movement of the first 'part' the rotarysecond part also is taken alon by thelatter, so: as to perform also a simultaneous longitudinal movement. I 22. A device for. packing tubes filled with Sandor the like, comprising in combination, meansfoiimmovablysecuring the filled tube in' positiomfabeating device adapted to play on the'outsideof thetube, the said beating device consisting of two parts, one part carryi'iigadjustable tensioning cams and being adapted to carry out a movement in the longitudinal direction of the tube, and the other part thereot being disposed above the part first mentioned and supports a number of radially disposed flexible hammers and further. is adapted to carryv out a rotary movement around the tube, and levers pivotally secured to the said rotary second part, one lever being provided for each hammer and the free end of each lever is attached to its hammer and during the rotation the flexible hammers are withdrawn from the tube by the contact of the free end of its hammer with the cams and the beating force of the hammers may be varied by means of adjusting the said cams, and during the longitudinal movement of the first part the rotary. second part also is taken along by the latter, so as to perform also a simultaneous longitudinal movement. I

23. A device for packing tubes filled with sand or the like, comprising in combination, means for immovably securing the filled tube in position, a heating device adapted to play on the outside of the tube, the said beating device consisting of two parts, one part carrying adjustable tensioning cams and being adapted to carry out a movement in the longitudinal direction of the tube, and the other part thereof being disposed above the part first mentioned and supports a hammer furnished with a spring in order to drive the hammer with force against the outside of the tube, the said second part being adapted to carry out a rotary movement around the tube, and a lever pivotally secured to the said rotary second part, the free end of the said lever being attached to the said hammer and during the rotation the hammer is'withdrawn from the tube by the contact of the free end of the lever with the cams and its spring is compressed and the tension of the latter and thus the beating force of the hammer may be varied by means of adjustingthe said cams, and during the longitudinal movement of the first part the-rotary second part also, is taken along by the latter, so as to perform also a simultaneous longitudinal 'movement. I 24. A device for packing tubes filled with sand orthe like, comprising in combination, means for immovably securing the filled tube inposition, a beating device adapted to play on the outside of the tube, the said beating devicewconsisting of two parts, one part carryingadjustable cams and being adapted to carry out a movement in the longitudinal direction of the tube. and the other part thereof being disposed above the part first mentioned and supports a number of radial ly disposed hammers, each hammer being furnished with a spring in order to drive its hammer with force against the outside of the tube, the said second part being adapted to carry out a rotary movement around the tube, and levers pivotally secured 'to the said rotary second part, one lever being provided for each hammer and the free end of each lever is attached to its hammer and during the rotation the hammers are withdrawn from the said tube and their springs are compressed and the tension of the latter and thus the beating force of the hammers may be varied by the said adjustable cams, and during the longitudinal movement of the first part the rotary second part also is taken along by the latter, so as to perform also a simultaneous longitudinal movement. 25. A device for packing tubes filled with sand or the like, comprising in combination. means for immoi ably securing the filled tube in position, and a beating device adapted to play on the outside of the tube, the said beating device consisting of two parts, one part carrying adjustable tensioning cams and being adapted to carry out a movement in the longitudinal direction of the tube and the other part thereof being disposed above the part first mentioned and supports a flexible screw-threaded hammer screwed into a sleeve, which is located in the second part, in order to adapt the length of the hammer to the diameter of the tube to be operated on by means of screwing the said hammer more or less far into the said sleeve, the said second part being adapted to carry out a rotary movement. around the tube, whereby the flexible hammer is withdrawn from the tube by the said cams and its beating force may be varied by the said adjustable cams, and during the longitudinal movement of the first part the rotary second part also is taken along by the latter, so as to perform also a-simultaneous longitudinal movement.

26. A device for packing tubes filled with sand or the like, comprising in combination, means for immovably securing the filled tube in position, and a. beating device adapted to play on the outside of the tube, the said heating device consisting of two parts, one part carrying adjustable cams and being adapted to carry out a movement in the longitudinal direction of the tube and the other part thereof being disposed above the part first mentioned and supports a number of radially disposed flexible screw-threaded hammers, each hammer being screwed into a sleeve located in the second part, in order to adapt the length of the hammer to the diameter of the tube to be operated on by means of screwing the said hammer more or less far into the said sleeve, the second part being adapted to carry out a rotary movement around the tube, whereby the flexible hammers are withdrawn from the tube by the said cams and their beating force may be varied by the said adjustable cams. and during the longitudinal movement of the first part the rotary second part also is taken along by the latter, so as to perform also a simultaneous longitudinal movement.

27. A device for packing tubes filled with sand or the like, comprising in combination, means for immova'bly securing the filled tube in position, and a beating device adapted to play on the outside of the tube, the said beating device consisting of two parts, one part carrying adjustable cams and being adapted to carry out a movement in the lon gitudinal direction of the tube and. the other part thereof being disposed above the part first mentioned and supports a screwthreaded hammer, which is furnished with a spring in order to drive the hammer with force against the outside of the tube and which is screwed into a sleeve located in the second part in order to adapt the length of the hammer to the diameter of the tube to be operated on by means of screwing the said hammer more or less far into the said sleeve, the said second part being adapted to carry out a rotary movement around the tube, whereby the hammer is withdrawn from the said tube by the said cams and its spring is compressed and the tension of the latter and thus the beating force of the hammer may be varied by the said adjustable cams, and during the longitudinal movement of the first part the rotary second part also is taken along -by the latter, so as to perform also a simultaneous longitudinal movement.

28. A device for packing tubes filled with sand or the like, comprising in combination, means for immovably securing the filled tube in position, and a beating device adapted to play on the outside of the tube, the said heating device consisting of two parts, one part carrying adjustable tensioning cams and being adapted to carry out a movement in the longitudinal direction of the tube and the other art thereof being disposed above the part rst mentioned and supports a number of radially disposed screw-threaded hammers, each hammer being furnished with a spring in order to drive the hammer with force against the outside of the tube and being screwed into a sleeve located in the second part in order to adapt the length of the hammer to the diameter of the tube to be operated on by means of screwing the said hammer more or less far into the said sleeve, the second part being adapted to carry out a rotary movement around the tube, whereby the hammers are withdrawn from the said cams and their springs are compressed and the tension of the latter and thus the beating force of the hammers may be varied by the said adjust able cams, and during the longitudinal movement of the first part the rotary second part also is taken along by the latter, so as to perform also a simultaneous longitudinal movement.

29. A device for rapping tubes which have been filled with sand comprising rapping hammers arranged for longitudinal movement and also for revoluble movement about the work, said hammers being also arranged for axial adjustment in accordance with the diameter of the work.

In testimony whereof I afiix my signature in presence of two witnesses.

JOHANN HOFFMANN.

Witnesses:

ALFRED HAMBURGER, JosEr GURMANN. 

